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213. Class Statistics

Problem Statement:
The new principal of Woop Woop Public plans to meet the teaching team to discuss the
performance of the classes/teachers and, being a bean counting fundamentalist, he wants to
arm himself with some statistics for the meetings.

Your task is to write a program that reads the pupils' marks in each class and generates
performance reports for the principal prior to the meetings.

Input Format:
The input starts with an integer K (1 < K < 100) indicating the number of classes on a
line by itself. Each of the following K lines gives a class's data, which starts with an
integer N (2 < N < 50) indicating the number of pupils in the class. The number of pupils
is followed by their marks, given as integers, in the range of zero to one hundred, separated
by single spaces.

Output Format:
The report for each class consists of two lines.
- The first line consists of the sentence: "Class X", where X indicates the class number
starting with the value of one.
- The second line reports the maximum class mark, minimum class mark and the largest
difference between consecutive marks (when sorted in non-decreasing order) in the
class using the formats shown in the sample below.

Sample Input:
2 5 30 25 76 23 78 6 25 50 70 99 70 90

Sample Output:
Class 1 Max 78, Min 23, Largest gap 46 Class 2 Max 99, Min 25, Largest gap 25

Added by: feras_kassar
Added at: 2014-09-07 07:00:00 UTC
Time Limit: 3 seconds
Partial score: No